Kudolf beegnee



(No Model.)

R. BERGNER.

AGCORDION. No. 252,010. Patented Jan. 10,1882.

UNITED STATES PATENT OFFICE.

RUDOLF BERGNER, F GERA, REUSS, GERMANY. n

r VAoooauloN.

SPECIFICATION forming part of Letters Patent No. 252,010, dated January 10, 1882.

Application filed October 15, 1880.

To all whom it may concern Be it known that I, RUDOLF BERGNER, of Gera, Reuss, Germany, have invented a new and useful Improvement in Accordions, of which the following isa specification.

The nature of my invention consists in the arrangement of the gearing for operating the damper in an accordion so that said damper can easily be operated by the thumb of the same hand whose fingers operate the key.

1n the accompanyingdrawings, Figurelrepresents a plan of the under side of an accordion with myimprovement attached. Fig. 2is a longitudinal section at line xx, Fig. l. Fig. 3 is a cross-section at line z e', Fig. 1. Fig. et is a view of the inner side ofthe damper-har; and Fig. 5 is a longitudinal section, showing a different arrangement, to be herenafter referred to.

y Similar letters represent similar parts in all the figures.

A A are the. reed-boards, containing the usual reeds, a a', and leather valves b b', in communication with openings w tu in the top plate ofthe accordion. Both' openings 'w and te are closed by a single valve, G, operated in the usual manner, so that one action ot' said valve G will open both openings to and w simultaneously. rthe additional reedboard, A', with its reeds and valves,corresponds exactly with the usual reed-board, A.

Across the reed-hoard A a dam per-bar, B, is arranged, provided on its inner side with strips c, of a suitable material, bearing upon the reeds a to keep the same closed, and com sequently out of action. The damper-bar B is attached to levers e e', hinged at g, and is acted upon by suitable springs, d and d', to keep the same close upon the reeds a. Thelevers e e are connected by a cross-bar, f, and to either of the levers (as shown in the drawings, to the lever e) a rod, h, is attached, passing (No model.) Patented in Germany March 13, 1880.

through the top plate ot' the accordion, and guided in a suitable guide, m. p At the end of the rod h a suitable button, t', is provided, and f this rod h is arranged to be in a convenient position near the thumb-strap D, t'or the th umh of the player to operate. the same. Whenever a greater sound is required the operator presses the rod h downward,thereby moving thedamper-bar B clear of the reeds a,as shown in dotted lilies in Fig. 3, when the air can operate both reeds a and asimultaneously,and thereby increase the sound.

Instead of pressing directly upon the rod h, a small lever, z, hinged at a iixed point, y, may be attached to the end ot' the rod h, as shown in Fig. 5, having on its free end the button i, attached eonvenientto be acted upon with the thumb ofthe operator. By this arrangement of the rod t,or ot' the button t', which operated the rod h., and through its connection the damper-bar B, near the thumb-strap D, the operator can easily move the damper-barB by the thumb ot' the hand through which the keys are opel'- ated, and is thus enabled to increase the sound ot' any key-note without removing the hand and stopping the playing.

What l claim as myinvention, and desire to secure by Letters Patent, is-

In an accordion provided with a si cond or additional row ot' reeds covered by a valve or damper adapted to be moved over the same, the controlling device for operating thedamper, consisting ot' the combination ot' the spx ings d d', levers e e', cross har j', and rod It, with knob t', with the damper-bar B, said rod h or knob t' being arranged at or near the thumbstrap D, in the manner and for the purpose substantially as described.

RUDOLF BERGNER.

litnessesz OT'ro SACK, E. RAEER. 

